2017. Changes in the rates of field isolation and antimicrobial susceptibility of bacterial pathogens collected from fall-placed feedlot steers between arrival at the feedlot and 90 to 120 days on feed. The Bovine Practitioner. 51, 2 (Jun. 2017), 165–173. DOI:https://doi.org/10.21423/bovine-vol51no2p165-173.